Otter Creek Lake
Davidson County, Tennessee75 acresView mapDirections
Not enough samples to grade — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). No letter yet. Here is what we do have.
- 40 ft max depth
- Limited data
Otter Creek Lake in Davidson County, Tennessee is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 130 µg/L. Surface area: 75 acres.
- Max depth
- ~40 ft est.
- Area
- 75 acres
- Phosphorus
- 130 µg/L
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Watch Otter Creek Lake’s letter
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Why Otter Creek Lake has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Otter Creek Lake, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). Sampling here has recorded phosphorus, but not water clarity and algae (chlorophyll-a).
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by TDEC and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Otter Creek Lake is a 75-acre lake in Davidson County, Tennessee with an estimated average depth of about 40 feet.
Source: EPA Water Quality Portal sampling records, TDEC, last sampled 2012-08-15. Grade methodology: LakeQuality methodology.
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Check local advisories before you swim.
Water quality measurements for Otter Creek Lake
These readings exist but are not enough for an A–F grade — see why.
No clarity data. Phosphorus 130 µg/L. TSI 74.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 130 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 74 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~40 ft est. |
| Average Depth | ~19 ft est. |
| Surface Area | 75 acres |
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Tennessee has not published bathymetry for Otter Creek Lake.
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.
Fishing Otter Creek Lake
Reservoir Info (USACE NID)
Otter Creek Lake is a man-made reservoir impounded by the Radnor Dam (completed 1917), built primarily for recreation on the Otter Creek; earth-type dam, 54 ft tall and 850 ft long.
- Surface area
- 75 ac
- Normal storage
- 1,321 ac-ft
- Max storage
- 2,150 ac-ft
- Drainage area
- 2.12 sq mi
- Hazard class
- High
- Owner
- Tdec
Source: USACE National Inventory of Dams, NID ID TN03711 · Operator website · Matched by proximity (0.03 km)
Graded lakes near Otter Creek Lake
Otter Creek Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Davidson County
Frequently asked questions about Otter Creek Lake
Where is Otter Creek Lake?
- Otter Creek Lake is a lake in Davidson County, Tennessee. LakeQuality has not rated this lake (UNRATED) — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
What is the water quality grade for Otter Creek Lake?
- Otter Creek Lake in Davidson County, Tennessee is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 130 µg/L. Surface area: 75 acres.
Is Otter Creek Lake safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
How deep is Otter Creek Lake?
- No published bathymetric survey covers Otter Creek Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 40 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate. The lake covers 75 acres.
Explore Otter Creek Lake across LakeQuality
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Where this data comes from
1 measurement from 1 monitoring station, 2012. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- TDEC Division of Water Resources
TDECWR_WQX1 sample · 2012
Analytical methods
- 4500 P E ~ Phosphorus in Water by Colorimetry- Ascorbic Acid Method
Monitoring station identifiers (1)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Other records on this page
Lake size & watershed from HydroLAKES (HydroSHEDS)